CODEWITHSUNDEEP
pythonpython-2.7importpsycopg2
Rorschach
Rorschach

Reputation: 3802

psycopg2 module cannot be found by Python2.7

I installed psycopg2 via pip, but my programs are having trouble finding it. So, I tried to install psycopg2 via pip again:

user@ubuntu:~/Desktop/progFolder$ sudo pip install psycopg2
Requirement already satisfied (use --upgrade to upgrade): psycopg2 in /usr/local/lib/python2.7/dist-packages
Cleaning up...

Then I tried to use a program that imports it:

user@ubuntu:~/Desktop/progFolder$ python myProg.py
Traceback (most recent call last):
  File "myProg.py", line 6, in <module>
    import psycopg2
ImportError: No module named psycopg2

And I have tried just importing directly in python:

user@ubuntu:~/Desktop/progFolder$ python
Python 2.7.5 (default, Nov  9 2014, 14:14:12) 
[GCC 4.8.2] on linux2
Type "help", "copyright", "credits" or "license" for more information.
>>> import psycopg2
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
ImportError: No module named psycopg2

So I printed my python path.

>>> import sys
>>> print sys.path
['', '/usr/local/lib/python27.zip', '/usr/local/lib/python2.7', '/usr/local/lib/python2.7/plat-linux2', '/usr/local/lib/python2.7/lib-tk', '/usr/local/lib/python2.7/lib-old', '/usr/local/lib/python2.7/lib-dynload', '/usr/local/lib/python2.7/site-packages']

And noticed that the path does contain the path to psycopg2. 

psycopg2 in /usr/local/lib/python2.7/dist-packages

So, I have no idea on why this is happening. Any help would be appreciated.

UPDATE: I have done

>>>help()
>>>modules

And psycopg2 was not listed among the other modules. (this does not help me but may help you help me)

Upvotes: 3

Views: 806

Answers (2)

user707650
user707650

Reputation:

Your pip looks ok (that is, it's the system/default one). Your Python executable, however, is something that didn't come by default with 14.04 LTS (e.g., on my 14.04 system, it's /usr/bin/python). Did you install that Python yourself? Then you need to install (and use) the corresponding pip as well. (Normally, Python would have come with a pip installation, but apparently in this case, it didn't.)

pip can be fairly simple installed from its installation instructions.

Though first, verify that

  • you did install /usr/local/bin/python yourself. That is, it didn't come with some other piece of software that you installed and that, along the way, decided to install Python there.

  • you want to use /usr/local/bin/python (I guess it is a more recent version of Python 2.7; the default 14.04 LTS one appears to be 2.6.7 as of 2015-08-03).

Upvotes: 1

FTA
FTA

Reputation: 345

From your python path print, it looks like it doesn't have /usr/local/lib/python2.7/dist-packages included in it. You can add it in one way by:

sys.path.insert(0, "/usr/local/lib/python2.7/dist-packages")

Upvotes: 1

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